J JJAPI

OpenAI

All OpenAI models, always current

Live model list with release dates, context windows, and recommended use cases. Updated 2026-05-23.

Sources synced directly from the vendor's /v1/models endpoint. Vendor's official model docs β†—

GPT-5.5 Pro

gpt-5.5-pro

OpenAI's strongest reasoning model. The default when accuracy beats latency.

Flagship
Released
Apr 23, 2026
Context
400k
Capabilities
visiontool usereasoningJSON modeparallel tools

GPT-5.5

gpt-5.5

Latest flagship general-purpose model. Default for new production builds.

Flagship
Released
Apr 23, 2026
Context
400k
Capabilities
visiontool useJSON modeparallel tools

GPT-Image-2

gpt-image-2

OpenAI's current image model. Better text rendering than DALLΒ·E 3 and supports edits.

Specialized
Released
Apr 21, 2026
Context
β€”
Capabilities
image generationimage editing

GPT-5.4 Mini

gpt-5.4-mini

Cheap workhorse. Great default for chatbots and bulk classification.

Fast
Released
Mar 17, 2026
Context
200k
Capabilities
visiontool useJSON mode

GPT-5.4 Nano

gpt-5.4-nano

Smallest GPT-5.4. For short classification, simple completion, embeddings-adjacent tasks.

Fast
Released
Mar 17, 2026
Context
128k
Capabilities
JSON mode

GPT-5.4 Pro

gpt-5.4-pro

Prior-gen pro model. Still excellent β€” slightly cheaper than 5.5-pro per token.

Flagship
Released
Mar 5, 2026
Context
400k
Capabilities
visiontool usereasoning

GPT-5.4

gpt-5.4

Mainline 5.4 β€” strong general model at moderate cost.

Flagship
Released
Mar 5, 2026
Context
400k
Capabilities
visiontool useJSON mode

GPT Realtime 2

gpt-realtime-2

Low-latency voice + text streaming. For phone agents and live-audio interfaces.

Specialized
Released
Feb 1, 2026
Context
128k
Capabilities
realtimevoicetool use

GPT-5.3 Codex

gpt-5.3-codex

Code-specialized model with fill-in-the-middle. The pick for IDE plugins and code agents.

Specialized
Released
Jan 15, 2026
Context
400k
Capabilities
codetool useFIM

GPT-5.2 Pro

gpt-5.2-pro

Late-2025 pro tier. Still strong for deep-reasoning workloads.

Flagship
Released
Dec 11, 2025
Context
400k
Capabilities
visiontool usereasoning

GPT-5.1

gpt-5.1

Mid-tier 5.x. Cheaper than 5.5 with most of the capability for chat workloads.

Flagship
Released
Nov 13, 2025
Context
400k
Capabilities
visiontool use

GPT-5

gpt-5

The original GPT-5 launch. Most clients have moved up to 5.4+; pinned here for legacy users.

Flagship
Released
Aug 7, 2025
Context
256k
Capabilities
visiontool use

o4-mini

o4-mini

Cheap reasoning model. Use for chain-of-thought tasks where 5.5-pro is overkill.

Reasoning
Released
Apr 16, 2025
Context
200k
Capabilities
reasoningtool use

o3

o3

Strong reasoning model from the o-series. Math, code analysis, structured planning.

Reasoning
Released
Apr 16, 2025
Context
200k
Capabilities
reasoningtool use

GPT-4.1

gpt-4.1

Long-context 4.x. Useful when you specifically need 1M tokens without going to 5.5.

Balanced
Released
Apr 14, 2025
Context
1M
Capabilities
1M contextvisiontool use

text-embedding-3-large

text-embedding-3-large

Highest-quality OpenAI embeddings. The default for new RAG pipelines.

Specialized
Released
Jan 25, 2024
Context
8k
Capabilities
embeddings3072 dims

Whisper

whisper-1

Multilingual speech-to-text. The canonical transcription model.

Specialized
Released
Mar 1, 2023
Context
β€”
Capabilities
transcriptiontranslation

Call it on JJAPI

Last updated: 2026-05-23